Hydrothermal preparation and morphology characteristics of Y3Fe5O12

Yong S. Cho, Vernon L. Burdick, Vasantha R.W. Amarakoon

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

The influences of processing parameters such as mineralizer, temperature, and nonstoichiometry on reaction product and morphology were investigated in the hydrothermal synthesis of yttrium iron garnet, Y3Fe5O12 (YIG). A cubic YIG phase was synthesized successfully under hydrothermal conditions of 200°C and 6 h from yttrium and iron hydroxide coprecipitates obtained by adjusting the pH to 10.5 using NH4OH. The other mineralizer, NaOH, was not effective in forming the garnet phase. Nonstoichiometric compositions utilizing excess Y content tended to increase the yield of the garnet phase, but did not affect the morphology. Different morphology characteristics were observed by changing the synthesis temperature. Isometric YIG particles disappeared at a relatively high temperature of 250°C, resulting in irregular star-shaped particles of YIG due to the preferential orientation during particle growth.

Original languageEnglish
Pages (from-to)1605-1608
Number of pages4
JournalJournal of the American Ceramic Society
Volume80
Issue number6
DOIs
Publication statusPublished - 1997 Jun

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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